<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.sql.PreparedStatement" %>
<%@ page import="java.sql.ResultSet" %><%--
  Created by IntelliJ IDEA.
  User: f
  Date: 2020/10/700
  Time: 8:16
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
  request.setCharacterEncoding("utf-8");
  String username=request.getParameter("username");
  String password=request.getParameter("password");

  Class.forName("com.mysql.jdbc.Driver");
  String url="jdbc:mysql://localhost:3306/mxy";
  Connection connection= DriverManager.getConnection(url,"root","root");

  String sql="select * from user where username=? and password=?";
  PreparedStatement ps=connection.prepareStatement(sql);
  ps.setString(1,username);
  ps.setString(2,password);

  ResultSet rs =ps.executeQuery();
  if(
          rs.next()
  ){
    session.setAttribute("username",username);

    response.sendRedirect("home.jsp");
  }else{
    out.print("登录失败,将3秒之后跳转到登录页面");
    response.setHeader("refresh","3;url=login.jsp");
  }
%>
